thumb|right|Otto Reutter Otto Reutter (born Otto Pfützenreuter: April 24, 1870 in Gardelegen, Germany – March 3, 1931 in Düsseldorf, Germany) was a German comedian, coupletist, and singer. Born into
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b2b4f2f367fa4ed1dab4bc117b99db3302b3ed3106660ca130cfb3e2c364f1. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/497ba43d-8ea2-4fab-b080-bcd59de32e97.json and https://artists.proofprofile.net/proofs/artist/497ba43d-8ea2-4fab-b080-bcd59de32e97.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kinder, Kinder, was sind heut' für Zeiten
Es geht mir in jeder Hinsicht immer besser
Der Überzieher - Original 1925 Remastered
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7587f0721b3cfdbe99a1661868d804b36d81bf2aa28d2fed6ef610be18e716b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE729600702.
Nehm'n Sie 'n Alten - Original 1927 Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e287f3e91eee048ef1782162cac5eeed4825acdf2b30437e9886ab278f9550. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE729600711.
Otto Reutter Der König Der Kleinkunst Vol. 2
Masterpieces Presents Otto Reutter - Seine größten Erfolge (Alle Hits & Raritäten)
Einnern sie sich? (Historische Aufnahmen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6001a80236e8def9bae86f95c8dea8825987adcac57d1e149fff404bc4277ec2. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA311500985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a349932519982dd5895572474fd460cd991949b314808c3cacc4b2af9803b4. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA311500992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc1563941ae72c14583631a8a4f485ecbe12b45315156ca3031bb9f8be69353. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA311500995.